feat: Implement session processing and refresh schedulers

- Added processingScheduler.js and processingScheduler.ts to handle session transcript processing using OpenAI API.
- Implemented a new scheduler (scheduler.js and schedulers.ts) for refreshing sessions every 15 minutes.
- Updated Prisma migrations to add new fields for processed sessions, including questions, sentimentCategory, and summary.
- Created scripts (process_sessions.mjs and process_sessions.ts) for manual processing of unprocessed sessions.
- Enhanced server.js and server.mjs to initialize schedulers on server start.

lib/scheduler.ts

@@ -20,8 +20,7 @@ export function startScheduler() {
           company.csvUsername as string | undefined,
           company.csvPassword as string | undefined
         );
-        await prisma.session.deleteMany({ where: { companyId: company.id } });
-
+        // Only add sessions that don't already exist in the database
         for (const session of sessions) {
           const sessionData: SessionCreateData = {
             ...session,
@@ -31,6 +30,16 @@ export function startScheduler() {
             startTime: session.startTime || new Date(),
           };
 
+          // Check if the session already exists
+          const existingSession = await prisma.session.findUnique({
+            where: { id: sessionData.id },
+          });
+
+          if (existingSession) {
+            // Skip this session as it already exists
+            continue;
+          }
+
           // Only include fields that are properly typed for Prisma
           await prisma.session.create({
             data: {